Spatio-temporal mapping of local soil pH changes induced by roots of lupin and soft-rush

2013 ◽  
Vol 369 (1-2) ◽  
pp. 669-680 ◽  
Author(s):  
Nicole Rudolph ◽  
Sebastian Voss ◽  
Ahmad B. Moradi ◽  
Stefan Nagl ◽  
Sascha E. Oswald
Keyword(s):  
Soil Ph ◽  
Ph Changes ◽  
Local Soil ◽  
Spatio Temporal ◽  
Soft Rush

scholarly journals Drivers of spatio-temporal changes in paddy soil pH in Jiangxi Province, China from 1980 to 2010

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Xi Guo ◽  
Hongyi Li ◽  
Huimin Yu ◽  
Weifeng Li ◽  
Yingcong Ye ◽  
...  
Keyword(s):  
Soil Ph ◽  
Paddy Soil ◽  
Temporal Changes ◽  
Jiangxi Province ◽  
Spatio Temporal

Soil pH changes during legume growth and application of plant material

1996 ◽  
Vol 23 (3) ◽  
pp. 236-242 ◽  
Author(s):  
F. Yan ◽  
S. Schubert ◽  
K. Mengel
Keyword(s):  
Soil Ph ◽  
Plant Material ◽  
Ph Changes ◽  
Legume Growth

scholarly journals Rapid increases in soil pH solubilise organic matter, dramatically increase denitrification potential and strongly stimulate microorganisms from theFirmicutesphylum

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e6090 ◽  
Author(s):  
Craig R. Anderson ◽  
Michelle E. Peterson ◽  
Rebekah A. Frampton ◽  
Simon R. Bulman ◽  
Sandi Keenan ◽  
...  
Keyword(s):  
Organic Matter ◽  
Microbial Communities ◽  
Soil Ph ◽  
Soil Microbial Communities ◽  
Fertilizer Application ◽  
Detailed Knowledge ◽  
Ph Change ◽  
Ph Changes ◽  
Soil Microbial ◽  
Chemical Attributes

Rapid and transient changes in pH frequently occur in soil, impacting dissolved organic matter (DOM) and other chemical attributes such as redox and oxygen conditions. Although we have detailed knowledge on microbial adaptation to long-term pH changes, little is known about the response of soil microbial communities to rapid pH change, nor how excess DOM might affect key aspects of microbial N processing. We used potassium hydroxide (KOH) to induce a range of soil pH changes likely to be observed after livestock urine or urea fertilizer application to soil. We also focus on nitrate reductive processes by incubating microcosms under anaerobic conditions for up to 48 h. Soil pH was elevated from 4.7 to 6.7, 8.3 or 8.8, and up to 240-fold higher DOM was mobilized by KOH compared to the controls. This increased microbial metabolism but there was no correlation between DOM concentrations and CO2respiration nor N-metabolism rates. Microbial communities became dominated byFirmicutesbacteria within 16 h, while few changes were observed in the fungal communities. Changes in N-biogeochemistry were rapid and denitrification enzyme activity (DEA) increased up to 25-fold with the highest rates occurring in microcosms at pH 8.3 that had been incubated for 24-hour prior to measuring DEA. Nitrous oxide reductase was inactive in the pH 4.7 controls but at pH 8.3 the reduction rates exceeded 3,000 ng N2–N g−1h−1in the presence of native DOM. Evidence for dissimilatory nitrate reduction to ammonium and/or organic matter mineralisation was observed with ammonium increasing to concentrations up to 10 times the original native soil concentrations while significant concentrations of nitrate were utilised. Pure isolates from the microcosms were dominated byBacillusspp. and exhibited varying nitrate reductive potential.

EFFECT OF FERTILIZER ON SOIL pH AFTER 17 YEARS OF CONTINUOUS CROPPING IN SOUTHWESTERN SASKATCHEWAN

1984 ◽  
Vol 64 (4) ◽  
pp. 705-710 ◽  
Author(s):  
C. A. CAMPBELL ◽  
R. P. ZENTNER
Keyword(s):  
Soil Ph ◽  
Average Rate ◽  
Ammonium Phosphate ◽  
Growing Season ◽  
Phosphate Fertilizer ◽  
Continuous Cropping ◽  
Ph Changes ◽  
Nitrate Fertilizer ◽  
Loam Soil ◽  
The One

Measurements of soil pH were made in the 0- to 2.5-cm, 2.5- to 7.5-cm, and 7.5-to 15-cm depths of a loam soil in two long-term (17 yr) continuous wheat rotations. One rotation received only ammonium phosphate fertilizer, while the other rotation received ammonium phosphate fertilizer plus ammonium nitrate fertilizer at an average rate of N of 35 kg∙ha−1∙yr−1. Soil pH was not measured at the start of the experiment. Measurements made at eight times between April and October 1983 showed that average pH in the surface 15 cm was lower in the rotation receiving N and P, compared to the one receiving only P, by about 0.5 pH units (pH 5.9 vs. 5.4 in dilute CaCl2). The soil pH varied considerably during the growing season and seemed to be inversely related to soil NO3-N. These pH changes occurred in a well buffered soil with CEC of 23.5 meq∙100 g−1. Scientists recommending that producers on the Prairies move to a more extended crop rotation so as to reduce land degradation, should bear in mind that eventually there may be a need to lime the soils to maintain production since such a system will necessitate the increased use of N fertilizers. Key words: pH changes during growing season, pH versus depth, soil acidity

Predicting soil pH changes in response to application of urea and sheep urine

2020 ◽  
Vol 49 (5) ◽  
pp. 1445-1452
Author(s):  
D. Curtin ◽  
M. E. Peterson ◽  
W. Qiu ◽  
P. M. Fraser
Keyword(s):  
Soil Ph ◽  
Ph Changes ◽  
Sheep Urine

Controlling soil pH with different N-fertilizers in experiments with ryegrass in pots

1971 ◽  
Vol 77 (3) ◽  
pp. 549-551 ◽  
Author(s):  
J. Bolton
Keyword(s):  
Ammonium Nitrate ◽  
Soil Ph ◽  
Calcium Nitrate ◽  
N Fertilizer ◽  
Ph Changes ◽  
N Fertilizers ◽  
Ph Range

SUMMARYThe pH of soil cropped with ryegrass increased with calcium nitrate as a fertilizer and decreased with ammonium nitrate, especially in the mid-range of pH. Changes above pH 7·2 and below pH 4·5 were small.Yields of 4 cuts of grass given either N-fertilizer were similar over a pH range (in 0·01M-CaCl2) from 4·3 to 7·4. However, the composition of the grass and nutrient uptakes were affected by both soil pH and form of N-fertilizer.

scholarly journals The Response of Soil pH and Exchangeable Al to Alum and Lime Amendments

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 547
Author(s):  
Christopher Jorelle Gillespie ◽  
João Arthur Antonangelo ◽  
Hailin Zhang
Keyword(s):  
Great Plains ◽  
Soil Ph ◽  
Wheat Yield ◽  
Yield Potential ◽  
Temporal Variance ◽  
Winter Wheat Yield ◽  
Cubic Polynomial ◽  
Spatio Temporal ◽  
Study Sites ◽  
The Impact

Intensive cultivation and unprecedented utilization of ammoniacal fertilizer has accelerated soil acidification in the southern Great Plains and many other parts of the world. During a two-year study that evaluated the impact of soil pH and aluminum (Al) toxicity on winter wheat yield potential, we observed a variance in the edaphic responses of the two study sites (Stillwater and Chickasha) to two soil amendments, Alum [Al2(SO4)3] and lime [Ca(OH)2]. We found that AlKCl values at Stillwater were 223% and 150% higher than Chickasha during Year 1 and Year 2, respectively, with similar soil pH. Additionally, Alsat values at Stillwater were 30.6% and 24.9% higher than Chickasha during Year 1 and Year 2, respectively. Surprisingly, when treated as a bivariate of Alsat, soil buffer indices differed in graphical structure. While Chickasha was identified with a cubic polynomial (p < 0.0001), Stillwater was characterized by linear regression (p < 0.0001). We have reason to believe that this divergence in edaphic response might be attributed to the organically bound Al, dissolved organic carbon (DOC), spatio-temporal variance, and adsorption reactions regulated by the solubility of Al(OH)+2 species in acidic soils.

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